GEAR LESS POWER TRANSMISSION Meet Patel, Dharmik Parikh, Parth Parmar, Sarmesh Patel
Student, Institute of Technology and Management Universe, Vadodara, Gujarat, India
Nirajkumar Mehta Associate Professor, Institute of Technology and Management Universe,
Vadodara, India
ABSTRACT Today’s world requires speed on each and every field. Hence rapidness and quick
working is the most important. Nowadays for achieving rapidness, various machines are manufactured by man. The engineer inconstantly conformed to the challenges of
bringing ideas and design in to reality. New machines and techniques are being developed continuously to manufacture various products at cheaper rates and high
quality. The mechanism designed and “GEARLESS TRANSMISSION” is manufactured for being compact, which is skilful and is having more precise in
transmitting power at right angle without any gears. Key words: Gear Less, Power Transmission, Compact Design, Design of Mechanism, Product Design and Development
Cite this Article: Meet Patel, Dharmik Parikh, Parth Parmar, Sarmesh Patel, Gear Less Power Transmission. International Journal of Mechanical Engineering and
Technology 10(7), 2019, pp. 235-241. http://iaeme.com/Home/issue/IJMET?Volume=10&Issue=7
1. INTRODUCTION Engineer is constantly conformed to the challenges of bringing ideas and design in to reality.
New machine and techniques are being developed continuously to manufacture various products at cheaper rates and high quality. The project “GEARLESS TRANSMISSION”
being compact and portable equipment, which is skilful and is having more practise in the transmitting power at right angle without any gears being manufactured. The parts can be
easily made and price is also less. The Cylinder-piston Mechanism transmits the input power towards the output side such a way that the angular Forces produced in the slacks are simply transmitted with the help of cylinder-piston mechanism which takes up the I/P power and the angle drive is transferred towards the O/P slack and Cylinder-piston assembly. Hence very
little friction plays while the power is being transmitted. Therefore, it is appreciated that efficiency as high -92% is possible in Gear-Less Transmission mechanism. 90
2 DESIGN AND FABRICARI . ONHere is a wonderful mechanism that carries force through a 90º bend. Translating rotational
motion around an axis usually involves gears, which can quickly become complicated, inflexible and clumsy-looking, often ugly. So, instead of using gears, this technology
elegantly converts rotational motion using a set of cylindrical bars, bent to 90º, in a clever, simple and smooth process that translates strong rotational force even in restricted spaces. A gearless transmission is provided for transmitting rotational velocity from an input connected to three bent links. Both the input shaft and the housing have rotational axes. The rotational axis of the input shaft is disposed at an angle of 90 degrees with respect to the rotational axis of the housing. As a result, rotation of the input shaft results in a processional motion of the axis of the bent link. The rotary and reciprocating motion of bent link transmit rotation of
prime mover to 90 degree without any gear system to an output shaft without gears. The transmission includes an input shaft.
2.1. Concept Drawing of Machine
Figure 1 Concept Drawing of Machine
2.2. Working The Gearless transmission or Cylinder-piston mechanism is a device for transmitting Motions at any angle between the driving and driven shaft. The synthesis of this mechanism would reveal that it comprises of a number Cylinder-piston would be between 3 to 8, the more the Cylinder-of
piston the smoother the operation. These Cylinder-piston slide inside hollow cylinders thus formatting a sliding pair. Our mechanism has 3 such sliding pairs. These cylinders are placed in a Hollow pipe and are fastened at 120˚ to each other. This whole assembly is mounted on
welded MS base. The working of the mechanism is understood by the diagram. An unused form of transmission of power on shaft located at an angle. Motion is transmitted from driving to the driven shaft through the roads which are bent to conform to the angles between the shafts. These roads are located at in the holes equally spaced around a circle and they are free to slide in & out as the shaft revolves. This type of drive is especially suitable where quite operation at high speed is essential but only recommended for high duty. The operation of this
transmission will be apparent by the action of one rod. In making this transmission, it is essential to have the holes for a given rod located accurately in the same holes must be equally spaced in radial and circumferential directions, be parallel to each rod should be bent to at angle at which the shaft is to be located. If the holes drilled in the ends of the shafts have blind or closed ends, “ ”
there ought to be a small vent at the bottom of each rod hole for the escape of air compressed by the Cylinder-piston action of the rods. This transmission may be provided centrally and in line with the axis of each shaft and provided with a circular groove at each rod or a cross-
Cylinder-piston to permit rotation of the shaft about the rod simply active as a retaining device.
2.3. Concept in Machine Design Consideration in Machine Design When a machine is to be designed the following points to be considered: -
Types of load and stresses caused by the load.
Motion of the parts and kinematics of machine. This deals with the type of motion i.e. reciprocating, rotary and oscillatory.
Selection of material & factors like strength, durability, weight, corrosion resistant, weld ability, machine ability is considered.
Form and size of the components.
Frictional resistances and ease of lubrication.
Convenience and economical in operation.
Use of standard parts.
Facilities available for manufacturing.
Cost of making the machine.
Number of machine or product are manufactured
2.4. General Procedure Machine Designin The general steps to be followed in designing the machine are as followed.
Preparation of a statement of the problem indicating the purpose of the machine.
Selection of groups of mechanism for the desire motion.
Calculation of the force and energy on each machine member.
Selection of material.
Determining the size of component drawing and sending for manufacture.
3. CONCLUSION Some successful mechanical devices function smoothly however poor fly they are made while other does this only by virtue of an accurate construction & fitting of their moving parts. This projects which looks very simple & easy to construct was actually v y difficult to conceive & erimagine without seeing an actual one in practice. It is an event a fact in the creative mental process not the forces, which predominate among the schemes of the active tinkers. Motions demands to be studied first & we have done that very thing. We find that while acceptable analysis
for existing mechanism can often be made quite easily we cannot without insight & imagination make effective synthesis of new mechanism hence we are mould to present this
our project gear-less transmission at 180 (Cylinder-piston mechanism) which we have ˚
managed to successfully device after long & hard input in conceiving its working principle.
